This is kind of a vague question, but this has happened twice now. Every time I attempt to install car mods or ped mods (both downloaded from here), I go and start up the game using RageHook and receive a corrupt game data error, and have to verify the date with steam to fix the problem. I am using OpenIV to mod the game, is this just an issue of me not installing the mods correctly or could it be a compatibility issue? I have not had any problems with any of the script mods though. I am new to modding GTAV and never had these issues modding GTAIV.
Thanks for the help in advance!